%0 Journal Article
%A R.J. Plemmons
%A B.M. Schein
%T Groups of binary relations.
%J Semigroup forum
%D 1970
%P 267-271
%V 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1970__1_133800/
%F SF_1970__1_133800